#LCA #Chemistry #Chapter7
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Valence Bond Theory | The concept that covalent bonds are formed when orbital of different a toms overlap; also called the localized electron theory
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| Sigma bond | A hybrid bond in which an s and p orbital overlap end to end
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| Pi bond | A bond in which there is a side-by-side overlap of the orbitals
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| resonance | A molecular property where instead of oscillating between two different bond regions, the bonds take o n an intermediate character
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| molecular orbital theory | A bonding theory that suggests that the orgbitals of a molecule's atoms are replaced by totally new orbitals when a molecule forms. These orbitals, both bonding and non-bonding, are linear combinations o f the atomic orbitals.
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| VSEPR (valence shell electron pair repulsion) | A theory stating that because of electron-electron repulsion, the electron orbitals in molecules are arranged so that they are as far apart as possible around the central atom
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| tetrahedral | A structural arrangement in which four areas of electron density surround a central atom are oriented toward the corners of a four-sided pyramid
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| trigonal planar | A structural arrangement in which three particles surrounding a central particle are oriented toward the corners of a flat triangle
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| linear | a structural arrangement in which particles are positioned in a straight line
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| hybridization | The process of forming new kinds of orbitals with equal energies from a combination of orbitals of different energies
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| pyramidal | a structural arrangement in which three particles and an unshared electron pair surrounding a central particle are oriented toward the corners of a four sided pyramid
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| bent | A structural arrangement in which two particles are bonded to a central particle nonlinearly
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| polar covalent bond | A chemical bond that has partially positive and partially negative ends because of unevenly shared electrons. All bonds between nonidentical atoms are polar
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| dipole moment | The vector sum of the distance between charges and the strength of the charges; a measure of all bond polarities that exist within a molecule
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